bump fsgrammar to get = sign fixes

Author: baronfel

paket.lock

@@ -38,7 +38,7 @@ NUGET
       FSharp.Core (>= 4.7.2)
 GIT
   remote: https://github.com/ionide/ionide-fsgrammar.git
-     (24dec8e16f279bdfdca53ce33c714581df00ef52)
+     (f7f89b4138b482beb81b12348e6bc170bb7693d4)
 GITHUB
   remote: ionide/ionide-vscode-helpers
     src/Fable.Import.Showdown.fs (7da920c71e4f94240a55aabb555327ebef4b653d)